Ah, so much for the big brilliant alien. The Doctor was glad to see that Barbara instantly caught on, already pressing for questions. The Kessek shifted his big alien feet and big alien eyes (well, big compared to them, not so much his own size), and like he'd probably said something he shouldn't have. The Doctor nodded, looking earnest and, well, as keen to help as he could. Spindly arms and all.

"We're very good at team-work. Excellent with carrying parts. Like ants, I suppose. Not that I expect you to be familiar with ants."